This isn't a jammer. It looks like it's using EM radiation to actually destroy the electronics. It can probably be countered with shielding or radiation hardening, which of course adds weight and bulk.
Okay. I keyed on the phrase "Using the ultra-high frequency waves the weapon can completely disable aircraft communications, resulting in loss of control." But I can see it might just be designed to burn the entire thing out.
As a beam weapon, it might not be easy to target it since it might be essentially invisible outside of the beam.